Measurement Microphones

NTi Audio Measurement Microphone
A range of measurement microphones are available to suit your requirements. The measurement microphones combine with the XL2 for a comprehensive sound level meter and acoustic analyzer.

The microphones are 48V phantom powered and include an electronic data sheet. The Automated Sensor Detection (ASD) of the XL2 Analyzer automatically reads this data, i.e. the microphone model and calibration data. This promotes faster setup and ensures accurate measurements.

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Class 1 Sound Calibrator

Precision Calibrator 94/114 dB
The battery-operated Class 1 Sound Calibrator is classified for the calibration of class 1 measurement microphones, sound level meters and other acoustic measurement equipment. This precision microphone calibrator delivers 94 or 114 dB at a frequency of 1 kHz.

NTi Audio #: 600 000 388

Product Data

Add the "1/4" Calibration Adapter" to fit 1/4” measurement microphones into the Class 1 Sound Calibrator. NTi Audio #: 600 000 391

Class 2 Sound Calibrator

Klasse 2 Kalibrator
The battery-operated Class 2 Sound Calibrator is classified for the calibration of class 2 measurement microphones, sound level meters and other acoustic measurement equipment. This microphone calibrator delivers 114 dB at a frequency of 1 kHz.

NTi Audio #: 600 000 394

Product Data

Weather Protection WP30 for M2230

Microphone Weather Protection
The WP30 Weather Protection is a certified outdoor weather protection kit for the M2230 microphone. Together they form the M2230-WP outdoor microphone. The corrosion-free polymer housing, wind screen, water-repellent membrane and bird spike provide excellent protection from rain, wind, dust and perching birds. It is dedicated for precise acquisition of environmental noise data in outdoor applications.

NTi Audio #: 600 040 060 (without microphone)

Product Data M2230-WP

Dehumidifier for M2230-WP

Dehumidifier for M2230-WP
The Dehumidifier protects the microphone capsule from possible water damage caused by condensation due to high humidity. This provides reliable and precise measurements in changing environmental conditions. The Dehumidifier is an accessory for the outdoor measurement microphone M2230-WP (= M2230 with WP30).

NTi Audio #: 600 040 063

Product Data

Ever-ready Pouch

Ever-ready Pouch
The Ever-ready Pouch protects the XL2 during transport and operation. With its convenient belt-clip, the XL2 can be kept close by for those tasks requiring both hands. The Ever-ready Pouch allows operation of the XL2 fitted in the pouch.

NTi Audio #: 600 000 335

Mains Power Adapter

Mains Power Adapter
Mains Power Adapter with removable plug types. It suits the typical power sockets in Australia, China, Europe, Japan, US and UK; 100-240 VAC.
(Non-original power supplies may cause interferences with the measurement.)

NTi Audio #: 600 000 333

Battery Charger

Battery Charger
The Battery Charger efficiently recharges the spare battery whilst you are using your XL2 Audio and Acoustic Analyzer. One spare Li-Po battery is included with the battery charger.

NTi Audio #: 600 000 332

ASD Cable

ASD Cable
The ASD Cable allows for extended connections of the NTi Audio measurement microphones. It supports the transfer of the electronic data sheet from the microphone to the XL2 Analyzer.

NTi Audio #:
  • 5 meter (16 feet): 600 000 336
  • 10 meter (32 feet): 600 000 364
  • 20 meter (64 feet): 600 000 365

The ASD technology offers the electronic data sheet transfer for cable length until 20 meter (64 feet).

Ball Head Mount

NTi-Audio Head Ball Mount

This flexible universal joint mounts the XL2 on a 1/4" or 3/8" stand. It provides the facility to mount the XL2 at any angle.

NTi Audio #: 600 000 387
Americas #: 600 000 373

A 5/8" stand requires additionally the Mounting Adapter, # 600 000 372.

Mounting Adapter

XL2 Mounting Adapter
This mechanical adapter piece mounts the XL2 on a microphone stand. Adapters for 3/8" or 5/8" stands are included.

International #: 600 000 372

Lightweight Tripod

Lightweight Tripod

Retractable, lightweight tripod with 1/4" ball head and 3/8" mounting thread. The flexible ball head mounts the XL2 Analyzer at any angle. The tripod is suitable for all measurement microphones, the outdoor microphone M2230-WP and the TalkBox.

Height: 115 - 140 cm, 45 - 55"
Weight: 1.4 kg, 50 oz
Folded: 11 x 8 x 56 cm, 4" x 3" x 22"
Unfolded area: 80 x 80 cm, 32" x 32"

NTi Audio #: 600 000 397

Limit Light

SPL Stack Light
The XL2 Sound Level Meter in combination with this Limit Light offers a turnkey solution for live sound monitoring.  The Limit Light provides a pre-warning with an orange light and indicates that levels have been exceeded with a red light. The sound level limits are set in the XL2.

NTi Audio #: 600 000 600

Product Data

Stack Light

SPL Stack Light
The XL2 Audio and Acoustic Analyzer in combination with this Stack Light provides a turnkey solution for noise level monitoring or pass / fail measurements where a prominent visual indication is required.

The Stack Light connects directly to the XL2 Analyzer and shows the actual measurement result with three different colors; green, orange and red.

NTi Audio #: 600 000 610

Product Data


The NetBox connects the XL2 Sound Level Meter to the internet for unattended noise monitoring. It transfers the measurement data to the fully-managed NoiseScout Web Portal (Managed Mode) in real time or provides a secure internet FTP access to the instrument (Gateway Mode).

NTi Audio #:
  • NetBox (LAN): 600 000 450
  • NetBox with 3G Modem & LAN: 600 000 458
Data Credits:
  • NoiseScout 365: 600 000 437
    (annual subscription service)
  • 30 Days: 600 000 490
  • 100 Days: 600 000 491
  • 366 Days (1 year): 600 000 492
  • 1096 Days (3 years): 600 000 493
Product Data

Live Demo:

NoiseScout - Gateway Mode
Password: gwdemo1409

NoiseScout - Managed Mode

Input Keypad

XL2 Input Keypad
The Input Keypad offers four marker keys to trigger an event recording or categorize any noise during measurements. A typical application is the subjective categorizing of any annoying industrial noise by persons living in the neighborhood. The XL2 Analyzer connects directly to the XL2 Input Keypad. (requires Extended Acoustic Pack Option installed on your XL2)

NTi Audio #: 600 000 384

Product Data

Digital I/O Adapter PCB

Digital I/O Adapter PCB
The XL2 Analyzer together with the Digital I/O Adapter controls external peripherals, such as a big red-orange-green lamp displaying exceeding sound levels. The Digital I/O Adapter connects to the digital I/O interface of the XL2 Analyzer.

NTi Audio #: 600 000 380

Product Data

XL2 System Case

Exel System Case
This compact system case provides the professional transport protection for work in the field. It offers space for the handheld instruments, cables and connectors.

NTi Audio #: 600 000 334

Basic Outdoor Case

Basic Outdoor Case
The Basic Outdoor Case is a simple and efficient solution for outdoor noise monitoring. Powered either by an external mains supply or a small, high capacity battery pack the case is more than adequate for a number of days of monitoring. The robust and lightweight design protects the XL2 and accessories from a wide range of inclement weather conditions.

NTi Audio #:
  • IP43: 600 000 471
  • IP63: 600 000 473

Heavy Duty Outdoor Case

XL2 Outdoor Case

The heavy duty outdoor case is a professional solution for short- and medium term unattended noise monitoring. The case provides comprehensive protection against dust, water and impacts. Internal dimensions provide ample space for battery packs to power the XL2 Sound Level Meter.

NTi Audio #:

  • IP43: 600 000 476
  • IP65: 600 000 477
Product Data

Tracer Battery Adapter Cable

Tracer Battery Adapter
The Tracer Battery Adapter Cable connects the Tracer battery pack to a NetBox or an XL2 Analyzer. It ensures that the connected instruments start up properly if the battery has been completely discharged.

NTi Audio #: 600 000 478

Product Data

GPS Receiver (customized)

GPS Receiver
The specially adapted GNSS receiver comes with a built-in active antenna in a white housing. It connects to the XL2 Sound Level Meter and the NetBox. Typical applications are to synchronize the start time of one or multiple XL2s precisely with the GPS signal (+/- 0.7 ms) or presenting the precise instrument position in NoiseScout Gateway mode for unattended noise and vibration monitoring. The GNSS receiver supports Galileo, GPS and other systems..

NTi Audio #: 600 000 357

Product Data

Weatherproof Enclosure for Noise Monitoring Terminal

Noise Monitoring Terminal

The weatherproof enclosure is the tailored fixed installation solution for unattended noise monitoring. The enclosure is IP66 rated, highly secure and constructed of strong, hard-wearing reinforced fiberglass.

NTi Audio #: 600 000 480

Product Data

MA220 Microphone PreAmplifier

MA220 Microphone PreAmplifier
The MA220 is a low noise microphone preamplifier compatible with standardized 1/2" microphone capsules. It includes an electronic datasheet for fast setup and ensuring accurate measurements.

NTi Audio #: 600 040 040

Product Data

XLR Adapter ASD

XLR male/female Adapter with electronic data sheet for automated sensor detection (ASD) of other sensors.

Application example:
This adapter stores the sensitivity of AFILS-Sensors in the installed electronic data sheet. The XL2 reads this information, is immediately ready for accurate measurements and documents this sensitivity data in the reports.

NTi Audio # 600 000 383

Product Data

ICP Adapter ASD

The ICP Adapter connects to the XL2 and generates ICP power supply for accelerometers and other custom sensors. The adapter offers an electronic data sheet, which stores the sensitivity and individual serial number of the connected sensor.

NTi Audio #: 600 010 223

Product Data

SD Card 32GB

SD Card
Every 32 GB SD Card is individually tested

The XL2 requires an SD card that can continuously and simultaneously store many data streams. Unfortunately, many cards available on the market are known to interrupt the read/write process for periods of more than 10 seconds. This leads to data loss in the XL2. These interruptions can occur regardless of the speed rating of the card. Even cards of the same type and from the same vendor behave differently depending on the production date. Therefore, to ensure the integrity of the XL2 data recording, NTi Audio verifies every single card over a period of several days before the card is sent to our customer. Requires XL2 Firmware V4.10 or higher.

NTi Audio # 600 000 386

Accelerometer KS901MF

Vibration Sensor
The lightweight uniaxial piezoelectric accelerometer has been designed for analyzing the vibrations of devices with slight to medium excursions. With a weight of 24 g it is mounted to the device under test (DUT) via the built-in magnet.

NTi Audio # 600 010 347

Product Data

Accelerometer A4580

Vibration Sensor
The uniaxial piezoelectric accelerometer has been designed for analyzing the vibrations of massive devices with slight excursions up to strong impacts. With its low weight of 45 g the A4580 can be used for many applications. It can be mounted to the device under test (DUT) with an M5 screw or by using the included magnet.

NTi Audio # 600 010 349

Product Data

Manufacturer Calibration Certificate

Manufacturer Calibration Certificate

The calibration certificate lists the individual product data with serial number. The calibration and adjustment procedures follow the documentation and traceability requirements of the EN ISO / IEC 17025 standard.

Annual re-calibration of the instrument after the purchase is recommended ensuring accurate measurements.

NTi Audio #: 600 000 018

Sample Manufacturer Calibration Certificates:

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